Automatic valve.



A. B. SZPERKOWSKY. 7

AUTOMATIC VALVE APPLICATION FILED mm: s, 1907.

899,768. j Patented Sept. 29,1908.

- v L f 'IIIIIIII ANTON BOLESLAUS SZPERKOWSKY, OF BERLIN, GERMANY.

AUTOMATIQ VALVE.

Specification of Letters Patent.

Patented Sept. 29, 1908.

Application filed. June 3, 1907. Serial No. 377,096.

To all whom it may concern:

Be it known that I, ANTON BoLEsLAUs SzPERKoWsKY, a citizen of the German Empire, residing at Berlin, Warschauerstrasse 70, in the Kingdom :of Prussia, Germany, have invented certain new and useful Improvements in Automatic Valves, of which the following is a specification.

My invention relates to improvements in automatic valves, and more particularly to that class of valves which are designed to I regulate the pressure of steam used for heatmg or similar purposes, and which is taken from a source of supply which is not always in accordance with the demand, which source may be, for instance, the exhaust chamber of a steam engine. If now the steam supplied is not sufficient to cover the demand, the pressure of the steam will be decreased. By such a decrease of the pressure the aforesaid valve will be automatically opened to admit live steam to the steam conduit; and in case of a surplus of steam over the demand the said surplus will be automatically discharged into the air.

The object of my improvements is to provide a valve of the class stated in which the irregular admission of live steam to the conduit, and the jars of the valve are avoided. And for this purpose the passages through which live steam is admitted to the conduit are so constructed as to offer a large space to the steam for a slight displacement of the valve. The steam required for balancing the pressure will therefore be admitted to the conduit by a very small movement of the valve, and the latter will at once be closed again when the pressure of the steam has again acquired its normal degree within the conduit. On account of the slight motion of the valve any considerable energy is not imparted thereto, so that the jars of the same, causing, in valves heretofore in use, the rapid destruction ofthe parts, are entirely avoided.

To illustrate my invention I have shown an example thereof in. the accompanying drawing, in which Figure 1, is a cross-section of the said example, and Fig. 2, is a side view of a piston valve showing a modification of the valve used in Fig. 1.

Similar letters of reference refer to similar parts throughout the views.

eferring particularly to the example shown in Fig. 1 a slide valve d which, in the example shown is a piston valve is slidably which communicates supported within a casing a mounted with a flange b on a receiver for'the exhaust steam. Atits upper end it is connected with its flange c to a conduit through which the steam can be discharged into the atmosphere.v In the wall of the lower part of the casing a an annular chamber 9 is provided with a pipe extension 9 connected to the live steam supply. The piston is connected to a lever t through a rocking lever Z pivotally supported within the upper part of the casing a at k. A weight mounted on the lever 'i, keyed on the pivot 7c, has the tendency to hold the piston d in its lower. position against the -pressure of the steam below thepiston.

. The piston valve d is provided with two steam controlling ports formed, in the example shown, by passages e and f respectively. The ports formed by the lower passages control the admission of the live steam from the conduit g, while the upper passages control the discharge of a surplus of steam into the atmosphere. The controlling ports or passages e and f extend laterally of the direction of the movement of the piston, and over a large part of the circumference of the latter.

The operation of the valve is as follows: While the steam below the piston d is at its normal pressure the upper or controlling edges of the assages f are below the upper edge h of the luwer part of the casing, and the lower or controlling edges of the passages e are above the live steam supply g. When the pressure of the steam is decreased, the piston d moves downwards, so that the edges of the passages 6 pass beyond the conduit 9 and establish communication between the source of live steam, by way of conduit g, and the interior of the valve. As the passages e have a large lateral extension, a very slight displacement of the piston valve will cause the conduit 9 to be opened to a large extent, whereby a sufficient amount of live steam is at once admitted below the piston, and the conduit 9 is again closed. The upward movement resulting from the increase of the pressure of the steam to its normal state is very small. The same occurs with the upper passages, through which an excess of steam is discharged into the atmosphere.

Practical tests have shown that, even with considerable variations of the pressure of the steam, the displacements of the piston valve will not exceed a few millimeters, in order to balance said variations. The apparatus operates therefore without any jars, and the pressure of the steam varies only within small limits.

In Fig. 2, I have shown a modification of the piston d, in which the latter is made of an upper and lower part connected to each other by means of rods m integral with the said parts. The connecting rods m are preferably formed somewhat thinner than walls of the valves and are set back from the outer face of the valve, so that the conduit 9 is freely opened to the interior of the valve throughout its whole circumference when the port is in register therewith.

I claim:

1. An automatic pressure regulating valve comprising a casing adapted to be mounted on and communicating with a pressure conduit, said casing having one end open to the atmosphere and provided with an annular conduit communicating with a second source of pressure, a weighted piston valve in said casing having an end open to said pressure conduit and the other end closed, said valve being provided with relatively long and narrow circumferential ports to cause a small longitudinal movement of the valve to open. or close communication with the annular conduit or with the atmosphere respectively.

2. An automatic pressure regulating valve comprising a casing adapted to be mounted on and communicating with a pressure conduit, said. casing having one end. open to the atmosphere and provided with an annular spectively under a small longitudinal movement of the valve.

In witness whereof I have hereunto set my hand in presence of two witnesses.

ANTON BOIESTJAUS SZIIIRKMVSKY. Vitnesses HENRY I'IASPER, VVOLDE'MAR IIAUrT. 

